We don't know all the circumstances, so it would be pointless to speculate.

我们不了解所有的情况, 妄加推测是没有意义的。

From his letter I surmised that he was unhappy.

我从他的信中推测他并不快乐。

The detective is completely correct in his surmises.

这个侦探所推测的完全正确。

Based on these results and the ESI-MS data, the mechanism of sulfoxidation was proposed to be intramolecular nucleophilic oxygen transfer to a coordinated sulfide.

基于这些结喷雾质谱(ESI-MS)数据，亚砜化反的机理推测为分子内亲移到络合的硫醚底物上。

Guess that the long Dao dressed by generals in early time had flying ring,and the modern noble's long Dao was hung on caestus directly,so there's no flying ring.

推测早期披甲的藩将所配长刀皆有吊环，近代贵族的长刀直接别在腰带中，故无吊环。